Dirty Harry became a landmark cinematic experience, and not just because of Clint Eastwood’s powerful performance as renegade cop Harry Callahan. The movie pioneered the ‘loose cannon’ cop genre, delivered with a gritty realism that would become the standard for many police action and drama movies. Dirty Harry would spawn several sequels, but one movie is often overlooked when discussing the legacy of Clint Eastwood and the landmark series.